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Pk15.30

Alexander_far
Alexander_farstarted grow question 4 years ago
How many milliliters should I use for the last fertilizer pk 15.30 two weeks before harvest?
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Week 7
Feeding. Chemical composition
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DoDrugs420
DoDrugs420answered grow question 4 years ago
Depends from outdoors to indoors and from the size of the plant. I use mine 52/34 PK at 150mg/l indoors and its on the high end, and use 1g/liter on the outdoors one wich is even smaller but has a stronger light (the sun) and shows no signs of overdose, just a tiny bit of burn at the tips but overall leaves are perfectly healty. Check the recomended dose on the bottle/package, and start at 10%, then next watering bump up to 20%, 50%, 100%, as long as she doesn't show any signs of overfeed you can always move to the next stage, if it starts showing burn you just do regular watering and then on next feeding repeat the same dose or lower it by 5%/10%.
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NobodysBuds
NobodysBudsanswered grow question 4 years ago
what current ppm of p and k do you provide? if you boost it too high you will only hurt the plant. Don't do this blindly. if you want to do it, do the math first. There's plenty of online ppm nutrient calculators. if you have liquid nutes, make sure it considers specific gravity or you likely get bunk output. i don't know if my spreadsheet is correct for that, but welcome to test it out. linked in my gd main profile comment section. generalizationd dependent on factors like pH: P above 50-60 is just going to cause problems at some point. K above 200-220 is just going to cause problems at some point some variables will make those drastically different. pH and ratio of concentrations of other elements in your feed (even temp and pressure to some extent). if fairly balanced and near 6.5, this should be consistent. if pH is different you couldlook at the little pH charts that have for nutrient availability and makes some guesstimates to see if anything is outlandishly large or small.
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GMSgrows
GMSgrowsanswered grow question 4 years ago
I would let them go another 3 to 4 weeks yet. Outdoors in dirt you can feed right until the end if your organic but some still flush. So, I would feed at your normal rate. Cheers
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